The U.S. and China ended high-stakes trade talks on a positive note on Sunday, with U.S. officials touting a "deal" to reduce the U.S. trade deficit, while Chinese officials said the sides had reached "important consensus" and agreed to launch another new economic dialogue forum.

The White House has issued a statement saying the U.S. announced a China trade deal after the conclusion of talks between the U.S. and Chinese delegations in Switzerland on Sunday. But it wasn't immediately clear whether a deal had actually materialized.

Senior U.S. and Chinese officials met again on Sunday in Geneva, two sources familiar with the situation told Reuters, to resume weekend talks aimed at cooling the trade war that threatens to seriously damage the global economy.